<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>盒子模型的应用</title>
    <link rel="stylesheet" type="text/css" href="css_盒子模型实例.css">
</head>
<body>
<div class="top">
    <div class="top_content">
 
    </div>
 
</div>
<div class="body">
    <div  class="body_img"></div>
 
    <div  class="body_content">
        <div  class="body_no"></div>
    </div>
</div>
<div class="footing">
    <div class="foot_content"></div>
    <div class="foot_subnav"> </div>
</div>
</body>
</html>
 